Unio tumidus, the swollen river mussel, is a species of freshwater mussel, an aquatic bivalve mollusc in the family Unionidae, the river mussels.

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Photos with Unio tumidus

Swollen river mussel from Sweden
Latin: Unio tumidus
English: Swollen river mussel
Swedish: Spetsig m?larmussla

Photo: Joel Berglund

PRESERVED_SPECIMEN; Unio giberti Locard, 1889; Type status: LECTOTYPE; Identified by: N/A; Individual count: 1; Event date: N/A

PRESERVED_SPECIMEN; Unio alpecanus Bourguignat, 1882; Type status: LECTOTYPE; Identified by: N/A; Individual count: 1; Event date: N/A

PRESERVED_SPECIMEN; Unio lacrymiformis Locard, 1893; Type status: LECTOTYPE; Identified by: N/A; Individual count: 1; Event date: N/A

Shells of the swollen river mussel (Unio tumidus), length: 9,5 cm, Kirchwerder, Hamburg, Germany

View 10 more photos of Unio tumidus

Distribution

Geography

Continents

Europe, Asia

Regions

Jersey

Biogeographical realms

Palearctic

Its native distribution is European.

Croatia
Czech Republic - in Bohemia, in Moravia, vulnerable (VU)
Germany
- Germany - high endangered (Stark gefährdet )
- Germany - Listed as a specially protected species in annex 1 in Bundesartenschutzverordnung.
Latvia
Lithuania - vulnerable
Netherlands
Poland
Slovakia
Sweden
British Isles - in England